DFZ series high-pressure pipeline filter

In today's highly sophisticated hydraulic system, oil contamination has become the primary cause of equipment failure. According to industry statistics, about 70% of hydraulic system failures are caused by oil contamination, and the DFZ series high-pressure pipeline filters can reduce equipment wear rates by more than 60%. As a benchmark product in the industrial hydraulic field, the DFZ series high-pressure pipeline filter has become the preferred solution for industries such as wind power, metallurgy, and injection molding machinery due to its excellent filtration performance and reliability.

The DFZ series high-pressure pipeline filter is designed specifically for high-pressure working conditions, with a maximum pressure of 42MPa and a filtration accuracy covering 3-10 μ m. It can accurately intercept metal particles, rubber impurities, and chemical pollutants in hydraulic oil. Its core advantages are reflected in the following aspects.

1. Double layer filter structure, the outer layer uses stainless steel woven mesh to pre filter large particles, and the inner layer uses imported glass fiber filter material to finely filter small impurities. The pollutant holding capacity is twice that of conventional filters, significantly extending the replacement cycle.

2.Intelligent differential pressure management, equipped with a pollution transmitter, automatically alarms when the inlet and outlet pressure difference reaches 5 bar, reminding to replace the filter element; The bypass valve is designed to open when the pressure difference rises to 0.6 MPa to avoid the risk of system interruption.

3.Adaptability to extreme working conditions, with a working temperature range of -30 ℃ to 120 ℃, compatible with various media such as mineral oil, synthetic oil, and water ethylene glycol. The shell is made of high-strength carbon steel with excellent impact resistance.

The DFZ series high-pressure pipeline filters have successfully penetrated into multiple industrial fields, forming standardized application solutions, specifically presenting the following aspects.

1. For wind power equipment, in the gearbox lubrication system, the DFZ series improves the oil cleanliness to NAS level 6, reduces gear wear rate by 55%, and ensures a 20-year design life for the wind turbine.

2. Metallurgical equipment: After adopting the DFZ series in the hydraulic system of a continuous casting machine in a certain steel enterprise, the service life of the hydraulic pump has been extended from 8000 hours to 12000 hours, and the downtime due to faults has been reduced by 40%.

3. Injection molding machinery, by optimizing the flow channel design, the DFZ series controls the pressure difference loss within 0.1MPa, improves system energy efficiency by 15%, and increases product qualification rate by 3%.

4. In the hydraulic system of excavators, the DFZ series of construction machinery is subjected to high-pressure impact caused by frequent start stop, and the anti fatigue performance of the filter element is improved by 30%, adapting to extremely cold environments of -40 ℃.

Compared with similar products, the DFZ series high-pressure pipeline filter performs excellently in core indicators such as pressure bearing capacity (up to 42MPa), filtration accuracy (3 μ m), and pollutant holding capacity (twice that of conventional filter cartridges). For example, a certain aluminum processing enterprise originally used domestic filters, but the system cleanliness compliance rate was only 65%; After replacing with the DFZ series, the compliance rate increased to 98% and the annual downtime was reduced to less than 5 hours.

Provide multiple installation methods such as stacked, flange, threaded, etc., supporting parallel or series combination. In the hydraulic system of port cranes, the dual tube filter FMND series and DFZ series high-pressure pipeline filters work together to increase equipment availability to 99.2% and reduce annual maintenance costs by 200000 yuan.

We provide one-stop services from product selection to system design, installation and debugging. A third-party survey shows that users are 92% satisfied with the performance of DFZ series high-pressure pipeline filters, and their service response speed score ranks among the top three in the industry.

1. The pressure difference rises too quickly

Reason: The initial contamination level of the oil exceeds the standard, or the pre filtration device is missing.

Solution: Install SFW series oil suction filters at the front end of the return oil pipeline and regularly check the cleanliness of the oil (NAS level ≤ 8).

2. Incorrect opening of bypass valve

Reason: The system pressure shock exceeds 0.6MPa or the vacuum degree is abnormal.

Solution: Install an accumulator at the pump outlet to buffer pressure, and check if the diffuser is blocked to ensure that the oil tank level is 50mm above the minimum immersion line of the filter.

3. Short filter replacement cycle

Reason: Improper selection of filtering accuracy or presence of unfiltered pollution sources in the system.

Solution: Re match the filtration accuracy based on the cleanliness requirements of key components such as servo valves; Install DFZ series filters under the electromagnetic directional valve to form a two-stage filtration.

4. Difficulty starting in low-temperature environments

Reason: Excessive viscosity of the oil leads to increased flow resistance.

Solution: Use HV46 low-temperature hydraulic oil or install an oil tank heater to ensure that the system starts when the oil temperature is ≥ 40 ℃.